Their radar removal was baffling. There were rumors (perhaps Musk's tweets?) of Tesla investigating 4D imaging radars to replace their really old Continental radars, but they suddenly decided to remove it altogether. Many have attributed it to chip shortage and yet again Musk using vision-only as an excuse for removal.

My money is on chip shortage. There were some real problems with the radar (like reflections from overpasses) though. I think not being able to ship cars because not enough radars is what forced this decision though (vs. trying to fix the radar and/or the way it's fused with the vision).